Ben Carson threw his support behind Donald Trump on Friday, calling the Republican presidential front-runner a "very intelligent man that cares deeply about America." Americans need to know that there are "two Donald Trumps," Carson said. One is the man who has dominated headlines and the Republican primary with his brash statements, said Carson, a retired neurosurgeon who captivated some conservative voters with his unconventional presidential campaign before dropping out of the race last week. The other is "very cerebral and sits there and considers things very carefully." "He's much more cerebral and a much more reasonable person than...